Hemangioendothelioma of the lung and pleura: report of three cases.

Three patients with hemangioendothelioma of the lung and pleura are reported. Two patients underwent removal of the pulmonary lesion: both recovered and were alive one year and eight years later. The patient with pleural involvement had a radical excision of the pleura with the vascular tumor. He died almost two years later. The main histologic feature of this lesion is the presence of neoplastic cells within the endothelium, evidenced by reticulin silver stain.